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CN110687663A - Optical imaging system - Google Patents

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CN110687663A
CN110687663A CN201910972926.XA CN201910972926A CN110687663A CN 110687663 A CN110687663 A CN 110687663A CN 201910972926 A CN201910972926 A CN 201910972926A CN 110687663 A CN110687663 A CN 110687663A
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lens
imaging system
optical imaging
object side
image side
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CN110687663B (en
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黄文博
贺凌波
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Zhejiang Sunny Optics Co Ltd
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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B9/00Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or -
    • G02B9/64Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or - having more than six components
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B13/00Optical objectives specially designed for the purposes specified below
    • G02B13/001Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras
    • G02B13/0015Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design
    • G02B13/002Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface
    • G02B13/0045Miniaturised objectives for electronic devices, e.g. portable telephones, webcams, PDAs, small digital cameras characterised by the lens design having at least one aspherical surface having five or more lenses

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Abstract

本申请公开了一种光学成像系统,其沿光轴由物侧至像侧依序包括:具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,其中,第一透镜、第三透镜及第四透镜都具有正光焦度;光学成像系统的成像面上对角线长度的一半ImgH满足ImgH>5mm;光学成像系统的总有效焦距f与第三透镜的有效焦距f3满足2.0<f3/f<3.0。

Figure 201910972926

The present application discloses an optical imaging system, which includes sequentially from an object side to an image side along an optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a Six lenses and seventh lenses, wherein the first lens, the third lens and the fourth lens all have positive refractive power; half of the diagonal length of the imaging surface of the optical imaging system, ImgH, satisfies ImgH>5mm; the total length of the optical imaging system The effective focal length f and the effective focal length f3 of the third lens satisfy 2.0<f3/f<3.0.

Figure 201910972926

Description

光学成像系统Optical imaging system

技术领域technical field

本申请涉及光学元件领域,更具体地,涉及一种光学成像系统。The present application relates to the field of optical components, and more particularly, to an optical imaging system.

背景技术Background technique

近年来,随着科学技术的发展,市场对适用于便携式电子产品(例如手机)的光学成像系统的需求逐渐增加,尤其是越来越青睐高成像质量的光学成像系统。同时,图像传感器的技术不断进步,图像传感器上的像元数不断增加且单像元的尺寸不断减小,也要求光学成像系统的成像性能越来越高。In recent years, with the development of science and technology, the market demand for optical imaging systems suitable for portable electronic products (such as mobile phones) has gradually increased, especially optical imaging systems with high imaging quality are increasingly favored. At the same time, the technology of the image sensor continues to improve, the number of pixels on the image sensor continues to increase and the size of the unit pixel continues to decrease, which also requires the imaging performance of the optical imaging system to become higher and higher.

而现今便携式电子产品通常具有轻薄的特性,例如手机的厚度只有几毫米。产品的轻薄化限制了应用其中上的光学成像系统的光学总长,进而增加了光学成像系统的设计难度。Today's portable electronic products are usually thin and light, for example, the thickness of a mobile phone is only a few millimeters. The lightness and thinness of the product limits the total optical length of the optical imaging system applied therein, thereby increasing the design difficulty of the optical imaging system.

为了满足小型化需求并满足成像要求,需要一种能够兼顾大像面、高成像质量和小型化的光学成像系统。In order to meet the requirements of miniaturization and imaging requirements, an optical imaging system that can take into account a large image area, high imaging quality and miniaturization is required.

发明内容SUMMARY OF THE INVENTION

本申请提供了可适用于便携式电子产品的、可至少解决或部分解决现有技术中的上述至少一个缺点的光学成像系统。The present application provides an optical imaging system applicable to portable electronic products that addresses at least or partially addresses at least one of the above-mentioned disadvantages of the prior art.

本申请提供了一种光学成像系统,其沿光轴由物侧至像侧依序包括:具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,其中,第一透镜、第三透镜及第四透镜都可具有正光焦度。The present application provides an optical imaging system, which includes sequentially from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a Six lenses and a seventh lens, wherein the first lens, the third lens and the fourth lens may all have positive refractive power.

在一个实施方式中,光学成像系统的成像面上对角线长度的一半ImgH可满足ImgH>5mm。In one embodiment, the half ImgH of the diagonal length of the imaging surface of the optical imaging system may satisfy ImgH>5mm.

光学成像系统的总有效焦距f与第三透镜的有效焦距f3可满足2.0<f3/f<3.0。The total effective focal length f of the optical imaging system and the effective focal length f3 of the third lens may satisfy 2.0<f3/f<3.0.

在一个实施方式中,第二透镜的有效焦距f2与第七透镜的有效焦距f7可满足1.5<f2/f7<2.0。In one embodiment, the effective focal length f2 of the second lens and the effective focal length f7 of the seventh lens may satisfy 1.5<f2/f7<2.0.

在一个实施方式中,第一透镜的有效焦距f1与第六透镜的有效焦距f6可满足1.1<f6/f1<2.0。In one embodiment, the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens may satisfy 1.1<f6/f1<2.0.

在一个实施方式中,第二透镜的物侧面的曲率半径R3与第二透镜的像侧面的曲率半径R4可满足2.5<R3/R4<4.0。In one embodiment, the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens may satisfy 2.5<R3/R4<4.0.

在一个实施方式中,第三透镜的物侧面的曲率半径R5与第三透镜的像侧面的曲率半径R6可满足1.4<R6/R5<2.0。In one embodiment, the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens may satisfy 1.4<R6/R5<2.0.

在一个实施方式中,第四透镜的物侧面的曲率半径R7与第四透镜的像侧面的曲率半径R8可满足1.0<R7/R8<2.0。In one embodiment, the curvature radius R7 of the object side surface of the fourth lens and the curvature radius R8 of the image side surface of the fourth lens may satisfy 1.0<R7/R8<2.0.

在一个实施方式中,第六透镜的像侧面的曲率半径R12与第七透镜的物侧面的曲率半径R13可满足1.2<R12/R13<3.1。In one embodiment, the curvature radius R12 of the image side surface of the sixth lens and the curvature radius R13 of the object side surface of the seventh lens may satisfy 1.2<R12/R13<3.1.

在一个实施方式中,第一透镜的物侧面的曲率半径R1、第五透镜的物侧面的曲率半径R9以及第五透镜的像侧面的曲率半径R10可满足1.5<(R1+R9)/R10<2.5。In one embodiment, the radius of curvature R1 of the object side of the first lens, the radius of curvature R9 of the object side of the fifth lens, and the radius of curvature R10 of the image side of the fifth lens may satisfy 1.5<(R1+R9)/R10< 2.5.

在一个实施方式中,第一透镜在光轴上的中心厚度CT1与第二透镜在光轴上的中心厚度CT2可满足3.0<CT1/CT2<4.0。In one embodiment, the central thickness CT1 of the first lens on the optical axis and the central thickness CT2 of the second lens on the optical axis may satisfy 3.0<CT1/CT2<4.0.

在一个实施方式中,第四透镜在光轴上的中心厚度CT4与第三透镜在光轴上的中心厚度CT3可满足1.5<CT4/CT3<3.5。In one embodiment, the center thickness CT4 of the fourth lens on the optical axis and the center thickness CT3 of the third lens on the optical axis may satisfy 1.5<CT4/CT3<3.5.

在一个实施方式中,第六透镜在光轴上的中心厚度CT6与第七透镜在光轴上的中心厚度CT7可满足1.3<CT6/CT7≤2.8。In one embodiment, the central thickness CT6 of the sixth lens element on the optical axis and the central thickness CT7 of the seventh lens element on the optical axis may satisfy 1.3<CT6/CT7≤2.8.

在一个实施方式中,第五透镜和第六透镜在光轴上的间隔距离T56与第六透镜和第七透镜在光轴上的间隔距离T67可满足1.5<T67/T56<3.6。In one embodiment, the separation distance T56 between the fifth lens and the sixth lens on the optical axis and the separation distance T67 between the sixth lens and the seventh lens on the optical axis may satisfy 1.5<T67/T56<3.6.

在一个实施方式中,第三透镜和第四透镜在光轴上的间隔距离T34与第四透镜和第五透镜在光轴上的间隔距离T45可满足0.5<T34/T45<1.5。In one embodiment, the separation distance T34 between the third lens and the fourth lens on the optical axis and the separation distance T45 between the fourth lens and the fifth lens on the optical axis may satisfy 0.5<T34/T45<1.5.

在一个实施方式中,第二透镜的折射率n2可满足n2>1.6,第三透镜的折射率n3可满足n3>1.6,第五透镜的折射率n5可满足n5>1.6。In one embodiment, the refractive index n2 of the second lens may satisfy n2>1.6, the refractive index n3 of the third lens may satisfy n3>1.6, and the refractive index n5 of the fifth lens may satisfy n5>1.6.

本申请采用了七片透镜,通过合理分配各透镜的光焦度、面型、各透镜的中心厚度以及各透镜之间的轴上间距等,使得上述光学成像系统具有小型化、大像面、高成像质量等至少一个有益效果。Seven lenses are used in the present application, and the above-mentioned optical imaging system has miniaturization, large image surface, At least one beneficial effect of high imaging quality and the like.

附图说明Description of drawings

结合附图,通过以下非限制性实施方式的详细描述,本申请的其他特征、目的和优点将变得更加明显。在附图中:Other features, objects and advantages of the present application will become more apparent from the following detailed description of non-limiting embodiments in conjunction with the accompanying drawings. In the attached image:

图1示出了根据本申请实施例1的光学成像系统的结构示意图;图2A至图2D分别示出了实施例1的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;1 shows a schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application; FIGS. 2A to 2D respectively show the on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 1 curve;

图3示出了根据本申请实施例2的光学成像系统的结构示意图;图4A至图4D分别示出了实施例2的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;3 shows a schematic structural diagram of the optical imaging system according to Embodiment 2 of the present application; FIGS. 4A to 4D respectively show the on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 2 curve;

图5示出了根据本申请实施例3的光学成像系统的结构示意图;图6A至图6D分别示出了实施例3的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;5 shows a schematic structural diagram of the optical imaging system according to Embodiment 3 of the present application; FIGS. 6A to 6D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 3 curve;

图7示出了根据本申请实施例4的光学成像系统的结构示意图;图8A至图8D分别示出了实施例4的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;7 shows a schematic structural diagram of the optical imaging system according to Embodiment 4 of the present application; FIGS. 8A to 8D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 4 curve;

图9示出了根据本申请实施例5的光学成像系统的结构示意图;图10A至图10D分别示出了实施例5的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;9 shows a schematic diagram of the structure of the optical imaging system according to Embodiment 5 of the present application; FIGS. 10A to 10D respectively show the on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 5 curve;

图11示出了根据本申请实施例6的光学成像系统的结构示意图;图12A至图12D分别示出了实施例6的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;11 shows a schematic structural diagram of the optical imaging system according to Embodiment 6 of the present application; FIGS. 12A to 12D respectively show the axial chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 6 curve;

图13示出了根据本申请实施例7的光学成像系统的结构示意图;图14A至图14D分别示出了实施例7的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线;13 shows a schematic structural diagram of the optical imaging system according to Embodiment 7 of the present application; FIGS. 14A to 14D respectively show the on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 7 curve;

图15示出了根据本申请实施例8的光学成像系统的结构示意图;图16A至图16D分别示出了实施例8的光学成像系统的轴上色差曲线、象散曲线、畸变曲线以及倍率色差曲线。15 shows a schematic structural diagram of the optical imaging system according to Embodiment 8 of the present application; FIGS. 16A to 16D respectively show the on-axis chromatic aberration curve, astigmatism curve, distortion curve and magnification chromatic aberration of the optical imaging system of Embodiment 8 curve.

具体实施方式Detailed ways

为了更好地理解本申请,将参考附图对本申请的各个方面做出更详细的说明。应理解,这些详细说明只是对本申请的示例性实施方式的描述,而非以任何方式限制本申请的范围。在说明书全文中,相同的附图标号指代相同的元件。表述“和/或”包括相关联的所列项目中的一个或多个的任何和全部组合。For a better understanding of the present application, various aspects of the present application will be described in more detail with reference to the accompanying drawings. It should be understood that these detailed descriptions are merely illustrative of exemplary embodiments of the present application and are not intended to limit the scope of the present application in any way. Throughout the specification, the same reference numerals refer to the same elements. The expression "and/or" includes any and all combinations of one or more of the associated listed items.

应注意,在本说明书中,第一、第二、第三等的表述仅用于将一个特征与另一个特征区分开来,而不表示对特征的任何限制。因此,在不背离本申请的教导的情况下,下文中讨论的第一透镜也可被称作第二透镜或第三透镜。It should be noted that in this specification, the expressions first, second, third etc. are only used to distinguish one feature from another feature and do not imply any limitation on the feature. Accordingly, the first lens discussed below may also be referred to as a second lens or a third lens without departing from the teachings of the present application.

在附图中,为了便于说明,已稍微夸大了透镜的厚度、尺寸和形状。具体来讲,附图中所示的球面或非球面的形状通过示例的方式示出。即,球面或非球面的形状不限于附图中示出的球面或非球面的形状。附图仅为示例而并非严格按比例绘制。In the drawings, the thickness, size and shape of the lenses have been slightly exaggerated for convenience of explanation. In particular, the spherical or aspherical shapes shown in the figures are shown by way of example. That is, the shape of the spherical or aspherical surface is not limited to the shape of the spherical or aspherical surface shown in the drawings. The drawings are examples only and are not drawn strictly to scale.

在本文中,近轴区域是指光轴附近的区域。若透镜表面为凸面且未界定该凸面位置时,则表示该透镜表面至少于近轴区域为凸面;若透镜表面为凹面且未界定该凹面位置时,则表示该透镜表面至少于近轴区域为凹面。每个透镜最靠近被摄物体的表面称为该透镜的物侧面,每个透镜最靠近成像面的表面称为该透镜的像侧面。Herein, the paraxial region refers to the region near the optical axis. If the lens surface is convex and the convex position is not defined, it means that the lens surface is convex at least in the paraxial region; if the lens surface is concave and the concave position is not defined, it means that the lens surface is at least in the paraxial region. Concave. The surface of each lens closest to the object is called the object side of the lens, and the surface of each lens closest to the imaging surface is called the image side of the lens.

还应理解的是,用语“包括”、“包括有”、“具有”、“包含”和/或“包含有”,当在本说明书中使用时表示存在所陈述的特征、元件和/或部件,但不排除存在或附加有一个或多个其它特征、元件、部件和/或它们的组合。此外,当诸如“...中的至少一个”的表述出现在所列特征的列表之后时,修饰整个所列特征,而不是修饰列表中的单独元件。此外,当描述本申请的实施方式时,使用“可”表示“本申请的一个或多个实施方式”。并且,用语“示例性的”旨在指代示例或举例说明。It will also be understood that the terms "comprising", "comprising", "having", "comprising" and/or "comprising" when used in this specification mean that the stated features, elements and/or components are present , but does not preclude the presence or addition of one or more other features, elements, components and/or combinations thereof. Furthermore, when an expression such as "at least one of" appears after a list of listed features, it modifies the entire listed feature and not the individual elements of the list. Furthermore, when describing embodiments of the present application, the use of "may" means "one or more embodiments of the present application." Also, the term "exemplary" is intended to refer to an example or illustration.

除非另外限定,否则本文中使用的所有用语(包括技术用语和科学用语)均具有与本申请所属领域普通技术人员的通常理解相同的含义。还应理解的是,用语(例如在常用词典中定义的用语)应被解释为具有与它们在相关技术的上下文中的含义一致的含义,并且将不被以理想化或过度正式意义解释,除非本文中明确如此限定。Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It should also be understood that terms (such as those defined in commonly used dictionaries) should be interpreted to have meanings consistent with their meanings in the context of the related art, and will not be interpreted in an idealized or overly formal sense unless It is expressly so limited herein.

需要说明的是,在不冲突的情况下,本申请中的实施例及实施例中的特征可以相互组合。下面将参考附图并结合实施例来详细说明本申请。It should be noted that the embodiments in the present application and the features of the embodiments may be combined with each other in the case of no conflict. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

以下对本申请的特征、原理和其他方面进行详细描述。The features, principles, and other aspects of the present application are described in detail below.

根据本申请示例性实施方式的光学成像系统可包括例如七片具有光焦度的透镜,即,第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜。这七片透镜沿着光轴由物侧至像侧依序排列。在第一透镜至第七透镜中,任意相邻两透镜之间均可具有空气间隔。The optical imaging system according to the exemplary embodiment of the present application may include, for example, seven lenses having optical power, ie, a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens, and a third lens Seven lenses. The seven lenses are arranged in sequence from the object side to the image side along the optical axis. In the first lens to the seventh lens, any two adjacent lenses may have an air space between them.

在示例性实施方式中,上述光学成像系统还可包括至少一个光阑。光阑可根据需要设置在适当位置处,例如,设置在物侧与第一透镜之间。可选地,光学成像系统还可包括用于校正色彩偏差的滤光片和/或用于保护位于成像面上的感光元件的保护玻璃。In an exemplary embodiment, the optical imaging system described above may further include at least one diaphragm. The diaphragm may be provided at an appropriate position as required, for example, between the object side and the first lens. Optionally, the optical imaging system may further include a filter for correcting color deviation and/or a protective glass for protecting the photosensitive element located on the imaging surface.

在示例性实施方式中,第一透镜可具有正光焦度,第二透镜可具有正光焦度和负光焦度,第三透镜可具有正光焦度,第四透镜可具有正光焦度,第五透镜可具有正光焦度和负光焦度,第六透镜可具有正光焦度和负光焦度,第七透镜可具有正光焦度和负光焦度。通过合理的控制系统的各个组元的光焦度的正负分配和镜片面型曲率,来有效的平衡控制系统的低阶像差。当第一透镜具有正光焦度时,有利于汇聚光学成像系统的入射光线;当第三透镜具有正光焦度时,有利于压缩光阑位置的光线的入射角,减小光瞳像差,进而提升光学成像系统的成像质量;当第四透镜具有正光焦度时,有利于缩短光学成像系统的光学总长,进而使光学成像系统小型化。In exemplary embodiments, the first lens may have positive power, the second lens may have positive power and negative power, the third lens may have positive power, the fourth lens may have positive power, and the fifth lens may have positive power. The lens may have positive power and negative power, the sixth lens may have positive power and negative power, and the seventh lens may have positive power and negative power. The low-order aberrations of the control system can be effectively balanced by reasonably controlling the positive and negative distribution of the power of each component of the system and the curvature of the lens surface. When the first lens has a positive refractive power, it is conducive to converging the incident light of the optical imaging system; when the third lens has a positive refractive power, it is conducive to compress the incident angle of the light at the diaphragm position, reduce pupil aberration, and then The imaging quality of the optical imaging system is improved; when the fourth lens has a positive refractive power, it is beneficial to shorten the total optical length of the optical imaging system, thereby miniaturizing the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式ImgH>5mm,其中,ImgH是光学成像系统的成像面上对角线长度的一半。更具体地,ImgH可满足ImgH>5.15mm。通过控制光学成像系统的像高,可以使光学成像系统在拍摄时鞥获得更多的景物内容,进而使成像信息丰富。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula ImgH>5mm, where ImgH is half of the diagonal length of the imaging plane of the optical imaging system. More specifically, ImgH may satisfy ImgH>5.15mm. By controlling the image height of the optical imaging system, the optical imaging system can obtain more scene content when shooting, thereby enriching the imaging information.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.5<f2/f7<2.0,其中,f2是第二透镜的有效焦距,f7是第七透镜的有效焦距。更具体地,f2与f7满足1.55<f2/f7<1.90。通过控制第二透镜的有效焦距与第七透镜的有效焦距的比值,可以减小光学成像系统内的光线的偏转角,进而提升光学成像系统的成像质量。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.5<f2/f7<2.0, where f2 is the effective focal length of the second lens, and f7 is the effective focal length of the seventh lens. More specifically, f2 and f7 satisfy 1.55<f2/f7<1.90. By controlling the ratio of the effective focal length of the second lens to the effective focal length of the seventh lens, the deflection angle of light in the optical imaging system can be reduced, thereby improving the imaging quality of the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式2.0<f3/f<3.0,其中,f是光学成像系统的总有效焦距,f3是第三透镜的有效焦距。更具体地,f与f3可满足2.15<f3/f<2.65。通过约束第三透镜的有效焦距,有利于使第三透镜处得到正象散,该正象散适于与第三透镜的物侧方向产生的负象散相互抵消,进而使光学成像系统具有良好的成像质量。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 2.0<f3/f<3.0, where f is the total effective focal length of the optical imaging system, and f3 is the effective focal length of the third lens. More specifically, f and f3 may satisfy 2.15<f3/f<2.65. By constraining the effective focal length of the third lens, it is beneficial to obtain positive astigmatism at the third lens, and the positive astigmatism is suitable for mutual cancellation with the negative astigmatism generated in the object side direction of the third lens, so that the optical imaging system has good performance. image quality.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.1<f6/f1<2.0,其中,f1是第一透镜的有效焦距,f6是第六透镜的有效焦距。更具体地,f1与f6可满足1.13<f6/f1<1.73。通过使第一透镜的有效焦距与第六透镜的有效焦距匹配,有利于使光学成像系统的轴外像差得到平衡。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.1<f6/f1<2.0, where f1 is the effective focal length of the first lens, and f6 is the effective focal length of the sixth lens. More specifically, f1 and f6 may satisfy 1.13<f6/f1<1.73. By matching the effective focal length of the first lens with the effective focal length of the sixth lens, it is beneficial to balance off-axis aberrations of the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式2.5<R3/R4<4.0,其中,R3是第二透镜的物侧面的曲率半径,R4是第二透镜的像侧面的曲率半径。更具体地,R3与R4可满足2.51<R3/R4<3.57。通过控制第二透镜的两侧镜面的曲率半径之比,有利于矫正光学成像系统的匹兹伐场曲。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 2.5<R3/R4<4.0, where R3 is the radius of curvature of the object side of the second lens, and R4 is the radius of curvature of the image side of the second lens . More specifically, R3 and R4 may satisfy 2.51<R3/R4<3.57. By controlling the ratio of the curvature radii of the mirror surfaces on both sides of the second lens, it is beneficial to correct the Petzval field curvature of the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.4<R6/R5<2.0,其中,R5是第三透镜的物侧面的曲率半径,R6是第三透镜的像侧面的曲率半径。更具体地,R5与R6可满足1.47<R6/R5<1.67。通过控制第三透镜的物侧面的曲率半径与其像侧面的曲率半径的比值,有利于使中心视场处的光线在前述两个面处的入射角较小,进而降低了中心视场的调制传递函数(Modulation Transfer Function,MTF)公差敏感性。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.4<R6/R5<2.0, where R5 is the radius of curvature of the object side of the third lens, and R6 is the radius of curvature of the image side of the third lens . More specifically, R5 and R6 may satisfy 1.47<R6/R5<1.67. By controlling the ratio of the curvature radius of the object side surface of the third lens to the curvature radius of the image side surface, it is beneficial to make the incident angle of the light at the central field of view smaller at the aforementioned two surfaces, thereby reducing the modulation transfer of the central field of view. Modulation Transfer Function (MTF) tolerance sensitivity.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.0<R7/R8<2.0,其中,R7是第四透镜的物侧面的曲率半径,R8是第四透镜的像侧面的曲率半径。更具体地,R7与R8可满足1.25<R7/R8<1.95。通过控制第四透镜的物侧面的曲率半径与其像侧面的曲率半径的比值,有利于减小光想的偏转角,进而使光学成像系统内的光路的偏折较好。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.0<R7/R8<2.0, where R7 is the radius of curvature of the object side of the fourth lens, and R8 is the radius of curvature of the image side of the fourth lens . More specifically, R7 and R8 may satisfy 1.25<R7/R8<1.95. By controlling the ratio of the curvature radius of the object side surface of the fourth lens to the curvature radius of the image side surface, it is beneficial to reduce the deflection angle of the light, thereby making the deflection of the light path in the optical imaging system better.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.2<R12/R13<3.1,其中,R12是第六透镜的像侧面的曲率半径,R13是第七透镜的物侧面的曲率半径。更具体地,R12与R13可满足1.28<R12/R13<3.09。通过使第六透镜的像侧面与第七透镜的物侧面匹配,有利于使光学成像系统的边缘视场的光线具有较好的角度,进而有效地降低光学成像系统的敏感性。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.2<R12/R13<3.1, wherein R12 is the curvature radius of the image side of the sixth lens, and R13 is the curvature radius of the object side of the seventh lens . More specifically, R12 and R13 may satisfy 1.28<R12/R13<3.09. By matching the image side surface of the sixth lens with the object side surface of the seventh lens, it is beneficial to make the light in the fringe field of view of the optical imaging system have a better angle, thereby effectively reducing the sensitivity of the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.5<(R1+R9)/R10<2.5,其中,R1是第一透镜的物侧面的曲率半径,R9是第五透镜的物侧面的曲率半径,R10是第五透镜的像侧面的曲率半径。更具体地,R1、R9以及R10可满足1.54<(R1+R9)/R10<2.04。通过使第一透镜的物侧面与第五透镜过的两个镜面匹配,有利于控制第一透镜及第五透镜的弯曲方向和弯折程度,并且可有效的控制第一透镜及第五透镜的光焦度,进而有利于控制第一透镜和第五透镜处的场曲,以提升光学成像系统的成像质量。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.5<(R1+R9)/R10<2.5, wherein R1 is the curvature radius of the object side surface of the first lens, and R9 is the object side of the fifth lens. The curvature radius of the side surface, R10 is the curvature radius of the image side surface of the fifth lens. More specifically, R1, R9 and R10 may satisfy 1.54<(R1+R9)/R10<2.04. By matching the object side of the first lens with the two mirror surfaces of the fifth lens, it is beneficial to control the bending direction and degree of bending of the first lens and the fifth lens, and can effectively control the bending direction of the first lens and the fifth lens. The optical power is further beneficial to control the field curvature at the first lens and the fifth lens, so as to improve the imaging quality of the optical imaging system.

在示例性实施方式中,本申请的光学成像系统可满足条件式3.0<CT1/CT2<4.0,其中,CT1是第一透镜在光轴上的中心厚度,CT2是第二透镜在光轴上的中心厚度。更具体地,CT1与CT2可满足3.05<CT1/CT2<3.85。通过控制第一透镜的中心厚度和第二透镜的中心厚度的比值,有利于使第一透镜及第二透镜分别具有较好的加工工艺性,使二者易于成型得到,并且有利于矫正光学成像系统的轴外慧差。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 3.0<CT1/CT2<4.0, wherein CT1 is the central thickness of the first lens on the optical axis, and CT2 is the thickness of the second lens on the optical axis Center thickness. More specifically, CT1 and CT2 may satisfy 3.05<CT1/CT2<3.85. By controlling the ratio between the center thickness of the first lens and the center thickness of the second lens, it is beneficial to make the first lens and the second lens have better processability respectively, so that the two can be easily formed, and it is beneficial to correct optical imaging The off-axis coma of the system.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.5<CT4/CT3<3.5,其中,CT4是第四透镜在光轴上的中心厚度,CT3是第三透镜在光轴上的中心厚度。更具体地,CT4与CT3可满足1.6<CT4/CT3<3.3。通过控制第四透镜的中心厚度与第三透镜的中心厚度的比值,有利于缩短光学成像系统的光学总长,使光学成像系统具有超薄化的特性,此外还可以矫正光学成像系统的轴外视场在子午方向及弧矢方向的像散。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.5<CT4/CT3<3.5, where CT4 is the central thickness of the fourth lens on the optical axis, and CT3 is the thickness of the third lens on the optical axis Center thickness. More specifically, CT4 and CT3 may satisfy 1.6<CT4/CT3<3.3. By controlling the ratio of the central thickness of the fourth lens to the central thickness of the third lens, it is beneficial to shorten the total optical length of the optical imaging system, so that the optical imaging system has ultra-thin characteristics, and the off-axis vision of the optical imaging system can also be corrected. The astigmatism of the field in the meridional and sagittal directions.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.3<CT6/CT7≤2.8,其中,CT6是第六透镜在光轴上的中心厚度,CT7是第七透镜在光轴上的中心厚度。通过控制第六透镜的中心厚度与第七透镜的中心厚度的比值,有利于对光学成像系统的畸变量进行调控,进而控制光学成像系统的畸变在期望的范围内。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.3<CT6/CT7≤2.8, wherein CT6 is the central thickness of the sixth lens on the optical axis, and CT7 is the thickness of the seventh lens on the optical axis Center thickness. By controlling the ratio of the central thickness of the sixth lens to the central thickness of the seventh lens, it is beneficial to adjust the distortion amount of the optical imaging system, thereby controlling the distortion of the optical imaging system to be within a desired range.

在示例性实施方式中,本申请的光学成像系统可满足条件式1.5<T67/T56<3.6,其中,T56是第五透镜和第六透镜在光轴上的间隔距离,T67是第六透镜和第七透镜在光轴上的间隔距离。更具体地,T56与T67可满足1.62<T67/T56<3.52。通过使第五透镜至第七透镜中的空气间隔匹配,有利于控制光学成像系统的场曲,进而使光学成像系统的轴外视场具有良好的成像质量。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 1.5<T67/T56<3.6, wherein T56 is the separation distance between the fifth lens and the sixth lens on the optical axis, T67 is the sixth lens and The separation distance of the seventh lens on the optical axis. More specifically, T56 and T67 may satisfy 1.62<T67/T56<3.52. Matching the air intervals in the fifth lens element to the seventh lens element is beneficial to control the field curvature of the optical imaging system, so that the off-axis field of view of the optical imaging system has good imaging quality.

在示例性实施方式中,本申请的光学成像系统可满足条件式0.5<T34/T45<1.5,其中,T34是第三透镜和第四透镜在光轴上的间隔距离,T45是第四透镜和第五透镜在光轴上的间隔距离。更具体地,T34与T45可满足0.9<T34/T45<1.3。通过控制第三透镜至第五透镜之间的空气间隔,有利于控制各个视场的场曲贡献量在期望的范围。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional formula 0.5<T34/T45<1.5, wherein T34 is the separation distance between the third lens and the fourth lens on the optical axis, T45 is the fourth lens and The separation distance of the fifth lens on the optical axis. More specifically, T34 and T45 may satisfy 0.9<T34/T45<1.3. By controlling the air interval between the third lens and the fifth lens, it is beneficial to control the contribution of field curvature of each field of view to a desired range.

在示例性实施方式中,本申请的光学成像系统可满足条件式n2>1.6,n3>1.6,n5>1.6,其中,n2是第二透镜的折射率,n3是第三透镜的折射率,n5是第五透镜的折射率。通过采用高折射率材料,可使第二透镜、第三透镜和第五透镜具有较高的折射率。高折射率的第二透镜和第三透镜有利于矫正光学成像系统的轴上球差,进而提升内视场的成像质量。高折射率的第五透镜有利于矫正光学成像系统的轴外慧差,进而提升外视场的成像质量。In an exemplary embodiment, the optical imaging system of the present application may satisfy the conditional expressions n2>1.6, n3>1.6, n5>1.6, wherein n2 is the refractive index of the second lens, n3 is the refractive index of the third lens, and n5 is the refractive index of the fifth lens. By using a high refractive index material, the second lens, the third lens and the fifth lens can have a higher refractive index. The second lens and the third lens with high refractive index are beneficial to correct the on-axis spherical aberration of the optical imaging system, thereby improving the imaging quality of the inner field of view. The fifth lens with high refractive index is beneficial to correct the off-axis coma aberration of the optical imaging system, thereby improving the imaging quality of the external field of view.

根据本申请的上述实施方式的光学成像系统可采用多片镜片,例如上文所述的七片。通过合理分配各透镜的光焦度、面型、各透镜的中心厚度以及各透镜之间的轴上间距等,可有效地缩小成像系统的体积、降低成像系统的敏感度并提高成像系统的可加工性,使得光学成像系统更有利于生产加工并且可适用于便携式电子产品。同时,本申请的光学成像系统还具备大像面、高成像质量等优良光学性能。The optical imaging system according to the above-mentioned embodiments of the present application may employ multiple lenses, such as the seven lenses described above. By rationally distributing the optical power, surface shape, central thickness of each lens, and on-axis distance between each lens, etc., the volume of the imaging system can be effectively reduced, the sensitivity of the imaging system can be reduced, and the feasibility of the imaging system can be improved. Processability makes the optical imaging system more conducive to production and processing and can be applied to portable electronic products. At the same time, the optical imaging system of the present application also has excellent optical properties such as a large image surface and high imaging quality.

在本申请的实施方式中,各透镜的镜面中的至少一个为非球面镜面,即,第一透镜的物侧面至第七透镜的像侧面中的至少一个为非球面镜面。非球面透镜的特点是:从透镜中心到透镜周边,曲率是连续变化的。与从透镜中心到透镜周边具有恒定曲率的球面透镜不同,非球面透镜具有更佳的曲率半径特性,具有改善歪曲像差及改善像散像差的优点。采用非球面透镜后,能够尽可能地消除在成像的时候出现的像差,从而改善成像质量。可选地,第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜中的每个透镜的物侧面和像侧面中的至少一个为非球面镜面。可选地,第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜中的每个透镜的物侧面和像侧面均为非球面镜面。In the embodiments of the present application, at least one of the mirror surfaces of each lens is an aspheric mirror surface, that is, at least one of the object side surface of the first lens to the image side surface of the seventh lens is an aspheric mirror surface. The characteristic of aspheric lenses is that the curvature changes continuously from the center of the lens to the periphery of the lens. Unlike spherical lenses, which have a constant curvature from the center of the lens to the periphery of the lens, aspheric lenses have better curvature radius characteristics, and have the advantages of improving distortion and astigmatism. After the aspherical lens is used, the aberration that occurs during imaging can be eliminated as much as possible, thereby improving the imaging quality. Optionally, at least one of the object side and the image side of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens is an aspherical mirror surface . Optionally, the object side surface and the image side surface of each of the first lens, the second lens, the third lens, the fourth lens, the fifth lens, the sixth lens and the seventh lens are aspherical mirror surfaces.

然而,本领域的技术人员应当理解,在未背离本申请要求保护的技术方案的情况下,可改变构成光学成像系统的透镜数量,来获得本说明书中描述的各个结果和优点。例如,虽然在实施方式中以七个透镜为例进行了描述,但是该光学成像系统不限于包括七个透镜。如果需要,该光学成像系统还可包括其它数量的透镜。However, those skilled in the art should understand that the number of lenses constituting the optical imaging system can be changed to obtain various results and advantages described in this specification without departing from the technical solutions claimed in the present application. For example, although seven lenses are described as an example in the embodiment, the optical imaging system is not limited to including seven lenses. The optical imaging system may also include other numbers of lenses if desired.

下面参照附图进一步描述可适用于上述实施方式的光学成像系统的具体实施例。Specific examples of the optical imaging system applicable to the above-described embodiments are further described below with reference to the accompanying drawings.

实施例1Example 1

以下参照图1至图2D描述根据本申请实施例1的光学成像系统。图1示出了根据本申请实施例1的光学成像系统的结构示意图。The optical imaging system according to Embodiment 1 of the present application is described below with reference to FIGS. 1 to 2D . FIG. 1 shows a schematic structural diagram of an optical imaging system according to Embodiment 1 of the present application.

如图1所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 1 , the optical imaging system includes sequentially from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凹面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有负光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凸面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has negative refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is convex, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

表1示出了实施例1的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。Table 1 shows the basic parameter table of the optical imaging system of Example 1, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm).

Figure BDA0002232694980000061
Figure BDA0002232694980000061

表1Table 1

在实施例1中,光学成像系统的总有效焦距f的值是5.89mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是6.83mm,成像面S17上有效像素区域对角线长的一半ImgH的值是5.20mm,最大视场角的一半Semi-FOV的值是40.96°,以及光学成像系统的光圈数Fno的值是1.92。In Example 1, the value of the total effective focal length f of the optical imaging system is 5.89 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 6.83 mm, and the effective pixel area on the imaging surface S17 is 6.83 mm. The value of ImgH, one half of the diagonal length, is 5.20 mm, the value of Semi-FOV, one half of the maximum angle of view, is 40.96°, and the value of the aperture number Fno of the optical imaging system is 1.92.

在实施例1中,第一透镜E1至第七透镜E7中的任意一个透镜的物侧面和像侧面均为非球面,各非球面透镜的面型x可利用但不限于以下非球面公式进行限定:In Embodiment 1, the object side and the image side of any one of the first lens E1 to the seventh lens E7 are aspherical, and the surface type x of each aspherical lens can be defined by, but not limited to, the following aspherical formula :

Figure BDA0002232694980000062
Figure BDA0002232694980000062

其中,x为非球面沿光轴方向在高度为h的位置时,距非球面顶点的距离矢高;c为非球面的近轴曲率,c=1/R(即,近轴曲率c为上表1中曲率半径R的倒数);k为圆锥系数;Ai是非球面第i-th阶的修正系数。下表2给出了可用于实施例1中各非球面镜面S1至S14的高次项系数A4、A6、A8、A10、A12、A14、A16、A18和A20Among them, x is the distance vector height of the aspheric surface from the vertex of the aspheric surface when the height is h along the optical axis; c is the paraxial curvature of the aspheric surface, c=1/R (that is, the paraxial curvature c is the above table 1 is the reciprocal of the radius of curvature R); k is the conic coefficient; Ai is the correction coefficient of the i-th order of the aspheric surface. Table 2 below gives the higher order coefficients A 4 , A 6 , A 8 , A 10 , A 12 , A 14 , A 16 , A 18 and A 20 that can be used for each of the aspheric mirror surfaces S1 to S14 in Example 1 .

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 -1.7129E-04-1.7129E-04 -3.5790E-03-3.5790E-03 -1.7510E-03-1.7510E-03 -6.2293E-04-6.2293E-04 -1.8084E-04-1.8084E-04 -3.3514E-05-3.3514E-05 -7.2523E-07-7.2523E-07 3.4216E-063.4216E-06 4.1990E-074.1990E-07 S2S2 -1.9169E-02-1.9169E-02 -1.5046E-03-1.5046E-03 7.9510E-047.9510E-04 -4.7427E-04-4.7427E-04 2.2595E-042.2595E-04 -2.1382E-05-2.1382E-05 -2.3760E-05-2.3760E-05 1.0290E-061.0290E-06 -2.2588E-06-2.2588E-06 S3S3 -4.6317E-02-4.6317E-02 1.0162E-021.0162E-02 2.7333E-032.7333E-03 4.6343E-044.6343E-04 3.0766E-043.0766E-04 -8.4092E-05-8.4092E-05 -9.2389E-05-9.2389E-05 -5.6617E-06-5.6617E-06 -9.1700E-06-9.1700E-06 S4S4 -6.7292E-02-6.7292E-02 6.5881E-036.5881E-03 -3.5281E-04-3.5281E-04 1.7263E-031.7263E-03 7.3433E-047.3433E-04 2.6411E-042.6411E-04 -5.2190E-05-5.2190E-05 -1.7488E-05-1.7488E-05 -1.1628E-05-1.1628E-05 S5S5 -4.6576E-02-4.6576E-02 1.7516E-021.7516E-02 -2.6746E-03-2.6746E-03 -1.3829E-03-1.3829E-03 -5.0475E-04-5.0475E-04 2.9239E-052.9239E-05 -3.9202E-06-3.9202E-06 3.2602E-053.2602E-05 1.2123E-051.2123E-05 S6S6 -3.8472E-04-3.8472E-04 1.0229E-021.0229E-02 2.2965E-032.2965E-03 5.4407E-045.4407E-04 8.0085E-058.0085E-05 7.1563E-067.1563E-06 -5.3283E-06-5.3283E-06 -5.0606E-06-5.0606E-06 -1.4985E-06-1.4985E-06 S7S7 -1.9904E-01-1.9904E-01 -3.3028E-03-3.3028E-03 1.1537E-021.1537E-02 8.0217E-038.0217E-03 3.9286E-033.9286E-03 1.6525E-031.6525E-03 5.8784E-045.8784E-04 1.7517E-041.7517E-04 3.9112E-053.9112E-05 S8S8 -4.0777E-01-4.0777E-01 -1.2650E-02-1.2650E-02 4.6636E-034.6636E-03 3.9986E-033.9986E-03 7.6216E-047.6216E-04 4.0398E-064.0398E-06 -2.2994E-04-2.2994E-04 -1.3686E-04-1.3686E-04 -4.7039E-05-4.7039E-05 S9S9 -1.2439E+00-1.2439E+00 5.1106E-025.1106E-02 6.1050E-036.1050E-03 1.0577E-021.0577E-02 -3.3061E-03-3.3061E-03 9.7613E-049.7613E-04 7.7305E-047.7305E-04 -1.3463E-04-1.3463E-04 -7.4892E-05-7.4892E-05 S10S10 -1.5651E+00-1.5651E+00 1.9271E-011.9271E-01 -3.6277E-02-3.6277E-02 -3.1992E-03-3.1992E-03 -1.0470E-03-1.0470E-03 1.0770E-021.0770E-02 7.5100E-037.5100E-03 2.2161E-032.2161E-03 5.7640E-045.7640E-04 S11S11 -1.0561E+00-1.0561E+00 4.2237E-024.2237E-02 4.7003E-024.7003E-02 -1.0375E-02-1.0375E-02 5.8837E-035.8837E-03 1.2592E-031.2592E-03 1.3886E-031.3886E-03 1.2733E-031.2733E-03 4.2886E-044.2886E-04 S12S12 2.2374E-012.2374E-01 4.7474E-024.7474E-02 4.2179E-024.2179E-02 -2.6998E-02-2.6998E-02 3.2353E-023.2353E-02 7.5152E-037.5152E-03 -1.5721E-04-1.5721E-04 1.3250E-031.3250E-03 4.5931E-044.5931E-04 S13S13 1.6883E+001.6883E+00 1.3663E-011.3663E-01 -1.0253E-01-1.0253E-01 7.2127E-037.2127E-03 2.4299E-022.4299E-02 -1.8539E-02-1.8539E-02 7.0725E-037.0725E-03 -1.5098E-03-1.5098E-03 1.4255E-041.4255E-04 S14S14 -2.7572E+00-2.7572E+00 3.4780E-013.4780E-01 3.9864E-033.9864E-03 1.5093E-021.5093E-02 -1.8126E-02-1.8126E-02 -1.4772E-02-1.4772E-02 3.3427E-033.3427E-03 -5.6782E-04-5.6782E-04 2.2282E-032.2282E-03

表2Table 2

图2A示出了实施例1的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图2B示出了实施例1的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图2C示出了实施例1的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图2D示出了实施例1的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图2A至图2D可知,实施例1所给出的光学成像系统能够实现良好的成像品质。FIG. 2A shows the on-axis chromatic aberration curve of the optical imaging system of Example 1, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 2B shows astigmatism curves of the optical imaging system of Example 1, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 2C shows a distortion curve of the optical imaging system of Example 1, which represents the distortion magnitude values corresponding to different image heights. FIG. 2D shows the magnification chromatic aberration curve of the optical imaging system of Example 1, which represents the deviation of different image heights on the imaging plane after light passes through the system. It can be seen from FIG. 2A to FIG. 2D that the optical imaging system provided in Embodiment 1 can achieve good imaging quality.

实施例2Example 2

以下参照图3至图4D描述根据本申请实施例2的光学成像系统。在本实施例及以下实施例中,为简洁起见,将省略部分与实施例1相似的描述。图3示出了根据本申请实施例2的光学成像系统的结构示意图。The optical imaging system according to Embodiment 2 of the present application will be described below with reference to FIGS. 3 to 4D . In this embodiment and the following embodiments, descriptions similar to those in Embodiment 1 will be omitted for the sake of brevity. FIG. 3 shows a schematic structural diagram of an optical imaging system according to Embodiment 2 of the present application.

如图3所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 3 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凹面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有正光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凹面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has positive refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is concave, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例2中,光学成像系统的总有效焦距f的值是6.10mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是7.26mm,成像面S17上有效像素区域对角线长的一半ImgH的值是5.40mm,最大视场角的一半Semi-FOV的值是41.03°,以及光学成像系统的光圈数Fno的值是1.92。In Example 2, the value of the total effective focal length f of the optical imaging system is 6.10 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.26 mm, and the effective pixel area on the imaging surface S17 is 7.26 mm. The value of ImgH, which is half the diagonal length, is 5.40 mm, the value of Semi-FOV, which is half the maximum angle of view, is 41.03°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表3示出了实施例2的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表4示出了可用于实施例2中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 3 shows the basic parameter table of the optical imaging system of Example 2, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Table 4 shows the high-order term coefficients that can be used for each aspherical mirror surface in Example 2, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

表3table 3

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 4.4931E-054.4931E-05 -4.5359E-03-4.5359E-03 -2.2678E-03-2.2678E-03 -8.5613E-04-8.5613E-04 -2.7731E-04-2.7731E-04 -7.4964E-05-7.4964E-05 -1.6760E-05-1.6760E-05 -3.0059E-06-3.0059E-06 -9.6881E-07-9.6881E-07 S2S2 -1.8544E-02-1.8544E-02 -2.7415E-03-2.7415E-03 -6.3032E-04-6.3032E-04 -3.7118E-04-3.7118E-04 4.0219E-054.0219E-05 -1.5617E-05-1.5617E-05 -1.3970E-06-1.3970E-06 -5.0787E-06-5.0787E-06 -2.5828E-06-2.5828E-06 S3S3 -4.7687E-02-4.7687E-02 1.1968E-021.1968E-02 1.6062E-031.6062E-03 5.0192E-045.0192E-04 2.0517E-042.0517E-04 -7.2923E-05-7.2923E-05 -6.2213E-05-6.2213E-05 -2.9283E-05-2.9283E-05 -8.6529E-06-8.6529E-06 S4S4 -6.7951E-02-6.7951E-02 9.8391E-039.8391E-03 3.5577E-043.5577E-04 1.1823E-031.1823E-03 6.5089E-046.5089E-04 2.9034E-042.9034E-04 9.3943E-069.3943E-06 -3.3717E-05-3.3717E-05 -1.7216E-05-1.7216E-05 S5S5 -4.1593E-02-4.1593E-02 1.2719E-021.2719E-02 -3.7809E-03-3.7809E-03 -1.1398E-03-1.1398E-03 2.6133E-042.6133E-04 4.2253E-044.2253E-04 -7.1380E-05-7.1380E-05 -1.2997E-04-1.2997E-04 -4.5700E-05-4.5700E-05 S6S6 -3.0798E-03-3.0798E-03 9.1338E-039.1338E-03 1.7118E-031.7118E-03 4.6273E-044.6273E-04 4.0464E-054.0464E-05 1.4114E-061.4114E-06 -3.9223E-06-3.9223E-06 -1.3218E-06-1.3218E-06 -1.9046E-06-1.9046E-06 S7S7 -1.9903E-01-1.9903E-01 1.1087E-041.1087E-04 1.1212E-021.1212E-02 7.8036E-037.8036E-03 3.9672E-033.9672E-03 1.7614E-031.7614E-03 6.6069E-046.6069E-04 2.0064E-042.0064E-04 4.0119E-054.0119E-05 S8S8 -4.0944E-01-4.0944E-01 2.1212E-032.1212E-03 -7.3091E-04-7.3091E-04 1.3224E-031.3224E-03 9.3043E-059.3043E-05 7.6394E-057.6394E-05 -1.8092E-05-1.8092E-05 -1.1714E-05-1.1714E-05 -9.7716E-06-9.7716E-06 S9S9 -1.2569E+00-1.2569E+00 7.1731E-027.1731E-02 1.7246E-031.7246E-03 2.9626E-032.9626E-03 1.6296E-031.6296E-03 2.5233E-032.5233E-03 1.7549E-031.7549E-03 3.0739E-043.0739E-04 4.5340E-054.5340E-05 S10S10 -1.6500E+00-1.6500E+00 1.9480E-011.9480E-01 -2.2613E-02-2.2613E-02 -1.5361E-02-1.5361E-02 1.4435E-031.4435E-03 8.7880E-038.7880E-03 7.8568E-037.8568E-03 2.5328E-032.5328E-03 7.6853E-047.6853E-04 S11S11 -9.9336E-01-9.9336E-01 4.3680E-024.3680E-02 5.6468E-025.6468E-02 -5.1385E-04-5.1385E-04 7.4142E-037.4142E-03 6.2688E-046.2688E-04 9.3269E-049.3269E-04 1.4475E-031.4475E-03 5.1221E-045.1221E-04 S12S12 2.7458E-012.7458E-01 6.9445E-026.9445E-02 1.5368E-021.5368E-02 -2.7351E-02-2.7351E-02 2.7792E-022.7792E-02 5.6137E-035.6137E-03 -3.6535E-04-3.6535E-04 1.3639E-031.3639E-03 6.2297E-046.2297E-04 S13S13 1.7663E+001.7663E+00 1.4003E-011.4003E-01 -1.0776E-01-1.0776E-01 7.3239E-037.3239E-03 2.5333E-022.5333E-02 -1.9197E-02-1.9197E-02 7.3564E-037.3564E-03 -1.5709E-03-1.5709E-03 1.4546E-041.4546E-04 S14S14 -2.8605E+00-2.8605E+00 4.0650E-014.0650E-01 -2.7833E-02-2.7833E-02 1.7590E-021.7590E-02 -1.5596E-02-1.5596E-02 -1.0761E-02-1.0761E-02 3.1066E-033.1066E-03 -1.8645E-03-1.8645E-03 1.1098E-031.1098E-03

表4Table 4

图4A示出了实施例2的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图4B示出了实施例2的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图4C示出了实施例2的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图4D示出了实施例2的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图4A至图4D可知,实施例2所给出的光学成像系统能够实现良好的成像品质。FIG. 4A shows the on-axis chromatic aberration curve of the optical imaging system of Example 2, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. FIG. 4B shows astigmatism curves of the optical imaging system of Example 2, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 4C shows a distortion curve of the optical imaging system of Example 2, which represents the distortion magnitude values corresponding to different image heights. FIG. 4D shows the magnification chromatic aberration curve of the optical imaging system of Example 2, which represents the deviation of different image heights on the imaging plane after light passes through the system. According to FIG. 4A to FIG. 4D , it can be seen that the optical imaging system provided in Embodiment 2 can achieve good imaging quality.

实施例3Example 3

以下参照图5至图6D描述了根据本申请实施例3的光学成像系统。图5示出了根据本申请实施例3的光学成像系统的结构示意图。The optical imaging system according to Embodiment 3 of the present application is described below with reference to FIGS. 5 to 6D . FIG. 5 shows a schematic structural diagram of an optical imaging system according to Embodiment 3 of the present application.

如图5所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 5 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, and fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凹面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有正光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凸面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has positive refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is convex, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例3中,光学成像系统的总有效焦距f的值是6.43mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是7.64mm,成像面S17上有效像素区域对角线长的一半ImgH的值是5.60mm,最大视场角的一半Semi-FOV的值是40.59°,以及光学成像系统的光圈数Fno的值是1.92。In Example 3, the value of the total effective focal length f of the optical imaging system is 6.43 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.64 mm, and the effective pixel area on the imaging surface S17 is 7.64 mm. The value of ImgH, one half of the diagonal length, is 5.60 mm, the value of Semi-FOV, one half of the maximum angle of view, is 40.59°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表5示出了实施例3的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表6示出了可用于实施例3中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 5 shows the basic parameter table of the optical imaging system of Example 3, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Table 6 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Example 3, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000091
Figure BDA0002232694980000091

表5table 5

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 1.0322E-031.0322E-03 -4.0407E-03-4.0407E-03 -2.1045E-03-2.1045E-03 -8.0118E-04-8.0118E-04 -2.6402E-04-2.6402E-04 -7.3372E-05-7.3372E-05 -1.8056E-05-1.8056E-05 -3.7791E-06-3.7791E-06 -1.3051E-06-1.3051E-06 S2S2 -1.8406E-02-1.8406E-02 -2.5879E-03-2.5879E-03 -7.1661E-04-7.1661E-04 -3.2493E-04-3.2493E-04 1.9286E-051.9286E-05 -1.2187E-05-1.2187E-05 -3.2774E-07-3.2774E-07 -3.2136E-06-3.2136E-06 -8.4421E-07-8.4421E-07 S3S3 -5.0317E-02-5.0317E-02 1.2357E-021.2357E-02 1.3232E-031.3232E-03 5.8115E-045.8115E-04 2.2496E-042.2496E-04 -1.3049E-05-1.3049E-05 -2.5186E-05-2.5186E-05 -1.2446E-05-1.2446E-05 -3.2037E-06-3.2037E-06 S4S4 -6.9537E-02-6.9537E-02 1.0146E-021.0146E-02 4.0164E-044.0164E-04 1.2477E-031.2477E-03 7.3059E-047.3059E-04 3.6419E-043.6419E-04 6.6229E-056.6229E-05 -8.2291E-06-8.2291E-06 -8.7505E-06-8.7505E-06 S5S5 -4.1248E-02-4.1248E-02 1.0749E-021.0749E-02 -4.1481E-03-4.1481E-03 -1.0681E-03-1.0681E-03 5.6982E-045.6982E-04 6.2567E-046.2567E-04 3.7289E-053.7289E-05 -9.1353E-05-9.1353E-05 -3.6304E-05-3.6304E-05 S6S6 -3.6610E-03-3.6610E-03 8.8703E-038.8703E-03 1.6517E-031.6517E-03 4.1583E-044.1583E-04 3.2719E-053.2719E-05 6.3169E-076.3169E-07 -2.1838E-06-2.1838E-06 -5.1554E-07-5.1554E-07 -1.6409E-06-1.6409E-06 S7S7 -2.0491E-01-2.0491E-01 2.6400E-042.6400E-04 1.1032E-021.1032E-02 7.4212E-037.4212E-03 3.7342E-033.7342E-03 1.6598E-031.6598E-03 6.3076E-046.3076E-04 1.9426E-041.9426E-04 3.9216E-053.9216E-05 S8S8 -4.1499E-01-4.1499E-01 6.5559E-036.5559E-03 -1.3281E-03-1.3281E-03 1.1761E-031.1761E-03 -7.6463E-05-7.6463E-05 4.4389E-054.4389E-05 -2.5067E-05-2.5067E-05 -7.9488E-06-7.9488E-06 -9.2960E-06-9.2960E-06 S9S9 -1.2981E+00-1.2981E+00 7.8202E-027.8202E-02 -2.4088E-03-2.4088E-03 2.4688E-032.4688E-03 4.5003E-044.5003E-04 2.2159E-032.2159E-03 1.5855E-031.5855E-03 2.1124E-042.1124E-04 1.4371E-051.4371E-05 S10S10 -1.6957E+00-1.6957E+00 2.0445E-012.0445E-01 -2.5276E-02-2.5276E-02 -1.5057E-02-1.5057E-02 1.3103E-031.3103E-03 1.0008E-021.0008E-02 7.5392E-037.5392E-03 1.9520E-031.9520E-03 5.9502E-045.9502E-04 S11S11 -1.0505E+00-1.0505E+00 4.0336E-024.0336E-02 5.6489E-025.6489E-02 -4.3201E-03-4.3201E-03 4.0158E-034.0158E-03 3.3841E-043.3841E-04 1.4474E-031.4474E-03 1.4578E-031.4578E-03 4.2667E-044.2667E-04 S12S12 2.7945E-012.7945E-01 6.2434E-026.2434E-02 1.4101E-021.4101E-02 -3.5446E-02-3.5446E-02 2.4884E-022.4884E-02 2.8124E-032.8124E-03 -9.6635E-04-9.6635E-04 1.1030E-031.1030E-03 4.6549E-044.6549E-04 S13S13 1.8302E+001.8302E+00 1.4415E-011.4415E-01 -1.1199E-01-1.1199E-01 7.6633E-037.6633E-03 2.6291E-022.6291E-02 -1.9906E-02-1.9906E-02 7.6277E-037.6277E-03 -1.6292E-03-1.6292E-03 1.5104E-041.5104E-04 S14S14 -2.9804E+00-2.9804E+00 4.1376E-014.1376E-01 -3.6746E-02-3.6746E-02 1.9357E-021.9357E-02 -1.7194E-02-1.7194E-02 -9.7732E-03-9.7732E-03 3.4501E-033.4501E-03 -1.9923E-03-1.9923E-03 1.0401E-031.0401E-03

表6Table 6

图6A示出了实施例3的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图6B示出了实施例3的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图6C示出了实施例3的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图6D示出了实施例3的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图6A至图6D可知,实施例3所给出的光学成像系统能够实现良好的成像品质。FIG. 6A shows the on-axis chromatic aberration curve of the optical imaging system of Example 3, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 6B shows astigmatism curves of the optical imaging system of Example 3, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 6C shows the distortion curve of the optical imaging system of Example 3, which represents the distortion magnitude values corresponding to different image heights. FIG. 6D shows the magnification chromatic aberration curve of the optical imaging system of Example 3, which represents the deviation of different image heights on the imaging plane after light passes through the system. It can be seen from FIG. 6A to FIG. 6D that the optical imaging system provided in Embodiment 3 can achieve good imaging quality.

实施例4Example 4

以下参照图7至图8D描述了根据本申请实施例4的光学成像系统。图7示出了根据本申请实施例4的光学成像系统的结构示意图。The optical imaging system according to Embodiment 4 of the present application is described below with reference to FIGS. 7 to 8D . FIG. 7 shows a schematic structural diagram of an optical imaging system according to Embodiment 4 of the present application.

如图7所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 7 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凹面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有负光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凹面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has negative refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is concave, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例4中,光学成像系统的总有效焦距f的值是6.42mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是7.75mm,成像面S17上有效像素区域对角线长的一半ImgH的值是5.80mm,以及最大视场角的一半Semi-FOV的值是41.60°,光学成像系统的光圈数Fno的值是1.92。In Example 4, the value of the total effective focal length f of the optical imaging system is 6.42 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.75 mm, and the effective pixel area on the imaging surface S17 is 7.75 mm. The value of ImgH, which is half the diagonal length, is 5.80mm, and the value of Semi-FOV, which is half of the maximum angle of view, is 41.60°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表7示出了实施例4的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表8示出了可用于实施例4中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 7 shows the basic parameter table of the optical imaging system of Example 4, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 8 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Example 4, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000111
Figure BDA0002232694980000111

表7Table 7

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 7.8403E-047.8403E-04 -5.1937E-03-5.1937E-03 -2.6493E-03-2.6493E-03 -1.0067E-03-1.0067E-03 -3.2688E-04-3.2688E-04 -9.1734E-05-9.1734E-05 -2.5690E-05-2.5690E-05 -7.8317E-06-7.8317E-06 -2.6942E-06-2.6942E-06 S2S2 -1.9846E-02-1.9846E-02 -3.4617E-03-3.4617E-03 -2.1689E-04-2.1689E-04 -4.9246E-04-4.9246E-04 8.5469E-058.5469E-05 -3.9296E-05-3.9296E-05 -1.7809E-05-1.7809E-05 -1.2158E-05-1.2158E-05 -6.9699E-06-6.9699E-06 S3S3 -5.1552E-02-5.1552E-02 1.2006E-021. 2006E-02 2.4698E-032.4698E-03 3.8806E-043.8806E-04 1.2471E-041.2471E-04 -1.7739E-04-1.7739E-04 -1.3093E-04-1.3093E-04 -5.3656E-05-5.3656E-05 -1.8952E-05-1.8952E-05 S4S4 -7.3363E-02-7.3363E-02 1.0785E-021.0785E-02 4.8113E-044.8113E-04 1.3678E-031.3678E-03 5.5752E-045.5752E-04 2.3247E-042.3247E-04 -3.3253E-05-3.3253E-05 -3.9311E-05-3.9311E-05 -2.1946E-05-2.1946E-05 S5S5 -4.8294E-02-4.8294E-02 1.4573E-021.4573E-02 -3.6451E-03-3.6451E-03 -1.0191E-03-1.0191E-03 8.3786E-068.3786E-06 3.3753E-043.3753E-04 -3.4174E-05-3.4174E-05 -8.3477E-05-8.3477E-05 -3.7865E-05-3.7865E-05 S6S6 -3.6602E-03-3.6602E-03 9.0507E-039.0507E-03 1.8622E-031.8622E-03 5.3311E-045.3311E-04 7.7934E-057.7934E-05 9.2972E-069.2972E-06 -4.0742E-06-4.0742E-06 -3.4363E-06-3.4363E-06 -2.2168E-06-2.2168E-06 S7S7 -2.1448E-01-2.1448E-01 -2.4874E-03-2.4874E-03 1.2580E-021.2580E-02 9.1780E-039.1780E-03 4.8223E-034.8223E-03 2.1186E-032.1186E-03 7.7325E-047.7325E-04 2.2173E-042.2173E-04 4.0966E-054.0966E-05 S8S8 -4.4631E-01-4.4631E-01 -3.7338E-03-3.7338E-03 1.1088E-031.1088E-03 2.1106E-032.1106E-03 5.8038E-045.8038E-04 1.8752E-041.8752E-04 2.3029E-052.3029E-05 -1.7256E-05-1.7256E-05 -6.5311E-06-6.5311E-06 S9S9 -1.4014E+00-1.4014E+00 5.7154E-025.7154E-02 1.6516E-031.6516E-03 3.5078E-033.5078E-03 3.6484E-033.6484E-03 3.6779E-033.6779E-03 2.3397E-032.3397E-03 1.0769E-041.0769E-04 6.8825E-056.8825E-05 S10S10 -1.7527E+00-1.7527E+00 2.2659E-012.2659E-01 -2.8172E-02-2.8172E-02 -1.9859E-02-1.9859E-02 1.3064E-031.3064E-03 1.0038E-021.0038E-02 1.0971E-021.0971E-02 4.3393E-034.3393E-03 1.5120E-031.5120E-03 S11S11 -9.2691E-01-9.2691E-01 8.7427E-028.7427E-02 4.5053E-024.5053E-02 -3.1033E-04-3.1033E-04 1.2271E-021.2271E-02 2.8736E-032.8736E-03 3.2574E-033.2574E-03 2.8809E-032.8809E-03 8.7300E-048.7300E-04 S12S12 4.0785E-014.0785E-01 9.6311E-029.6311E-02 -9.5988E-04-9.5988E-04 -1.5432E-02-1.5432E-02 3.3673E-023.3673E-02 9.6298E-039.6298E-03 1.8321E-031.8321E-03 2.7697E-032.7697E-03 1.1491E-031.1491E-03 S13S13 1.9365E+001.9365E+00 1.5288E-011.5288E-01 -1.1572E-01-1.1572E-01 7.4913E-037.4913E-03 2.7137E-022.7137E-02 -2.0614E-02-2.0614E-02 7.9085E-037.9085E-03 -1.6843E-03-1.6843E-03 1.5668E-041.5668E-04 S14S14 -3.1642E+00-3.1642E+00 3.4502E-013.4502E-01 -2.6527E-02-2.6527E-02 1.4668E-021.4668E-02 -1.0328E-02-1.0328E-02 -1.2763E-02-1.2763E-02 1.9154E-031.9154E-03 -1.8887E-03-1.8887E-03 1.2326E-031.2326E-03

表8Table 8

图8A示出了实施例4的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图8B示出了实施例4的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图8C示出了实施例4的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图8D示出了实施例4的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图8A至图8D可知,实施例4所给出的光学成像系统能够实现良好的成像品质。FIG. 8A shows the on-axis chromatic aberration curve of the optical imaging system of Example 4, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 8B shows astigmatism curves of the optical imaging system of Example 4, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 8C shows a distortion curve of the optical imaging system of Example 4, which represents the distortion magnitude values corresponding to different image heights. FIG. 8D shows the magnification chromatic aberration curve of the optical imaging system of Example 4, which represents the deviation of different image heights on the imaging plane after light passes through the system. It can be seen from FIG. 8A to FIG. 8D that the optical imaging system provided in Embodiment 4 can achieve good imaging quality.

实施例5Example 5

以下参照图9至图10D描述了根据本申请实施例5的光学成像系统。图9示出了根据本申请实施例5的光学成像系统的结构示意图。The optical imaging system according to Embodiment 5 of the present application is described below with reference to FIGS. 9 to 10D . FIG. 9 shows a schematic structural diagram of an optical imaging system according to Embodiment 5 of the present application.

如图9所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 9 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, and fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凹面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有负光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凸面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凸面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is concave. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has negative refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is convex, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is convex. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例5中,光学成像系统的总有效焦距f的值是6.63mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是7.98mm,成像面S17上有效像素区域对角线长的一半ImgH的值是6.00mm,以及最大视场角的一半Semi-FOV的值是41.66°,光学成像系统的光圈数Fno的值是1.92。In Example 5, the value of the total effective focal length f of the optical imaging system is 6.63 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 7.98 mm, and the effective pixel area on the imaging surface S17 is 7.98 mm. The value of ImgH, which is half the diagonal length, is 6.00 mm, and the value of Semi-FOV, which is half the maximum angle of view, is 41.66°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表9示出了实施例5的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表10示出了可用于实施例5中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 9 shows the basic parameter table of the optical imaging system of Example 5, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Table 10 shows the higher-order term coefficients that can be used for each aspherical mirror surface in Example 5, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000121
Figure BDA0002232694980000121

表9Table 9

Figure BDA0002232694980000122
Figure BDA0002232694980000122

表10Table 10

图10A示出了实施例5的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图10B示出了实施例5的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图10C示出了实施例5的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图10D示出了实施例5的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图10A至图10D可知,实施例5所给出的光学成像系统能够实现良好的成像品质。FIG. 10A shows the on-axis chromatic aberration curve of the optical imaging system of Example 5, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 10B shows astigmatism curves of the optical imaging system of Example 5, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 10C shows a distortion curve of the optical imaging system of Example 5, which represents the distortion magnitude values corresponding to different image heights. FIG. 10D shows the magnification chromatic aberration curve of the optical imaging system of Example 5, which represents the deviation of different image heights on the imaging plane after light passes through the system. It can be seen from FIGS. 10A to 10D that the optical imaging system provided in Embodiment 5 can achieve good imaging quality.

实施例6Example 6

以下参照图11至图12D描述了根据本申请实施例6的光学成像系统。图11示出了根据本申请实施例6的光学成像系统的结构示意图。The optical imaging system according to Embodiment 6 of the present application is described below with reference to FIGS. 11 to 12D . FIG. 11 shows a schematic structural diagram of an optical imaging system according to Embodiment 6 of the present application.

如图11所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 11 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, and fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凸面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有负光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凸面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is convex. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has negative refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is convex, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例6中,光学成像系统的总有效焦距f的值是7.01mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是8.62mm,成像面S17上有效像素区域对角线长的一半ImgH的值是6.20mm,以及最大视场角的一半Semi-FOV的值是40.67°,光学成像系统的光圈数Fno的值是1.92。In Example 6, the value of the total effective focal length f of the optical imaging system is 7.01 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 8.62 mm, and the effective pixel area on the imaging surface S17 is 8.62 mm. The value of ImgH, which is half the diagonal length, is 6.20 mm, and the value of Semi-FOV, which is half the maximum angle of view, is 40.67°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表11示出了实施例6的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表12示出了可用于实施例6中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 11 shows the basic parameter table of the optical imaging system of Example 6, wherein the units of the radius of curvature, thickness/distance, and focal length are all millimeters (mm). Table 12 shows the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 6, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000132
Figure BDA0002232694980000132

Figure BDA0002232694980000141
Figure BDA0002232694980000141

表11Table 11

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 -4.0906E-03-4.0906E-03 -6.4887E-03-6.4887E-03 -2.5802E-03-2.5802E-03 -8.1611E-04-8.1611E-04 -2.5486E-04-2.5486E-04 -8.5959E-05-8.5959E-05 -3.8842E-05-3.8842E-05 -1.6035E-05-1.6035E-05 -5.2825E-06-5.2825E-06 S2S2 1.9583E-021.9583E-02 -1.7115E-02-1.7115E-02 2.3322E-032.3322E-03 -2.7196E-03-2.7196E-03 3.0570E-043.0570E-04 -6.1209E-04-6.1209E-04 4.3600E-054.3600E-05 -5.9810E-05-5.9810E-05 2.9655E-052.9655E-05 S3S3 -3.6717E-02-3.6717E-02 4.5300E-034.5300E-03 3.7535E-033.7535E-03 -9.2683E-04-9.2683E-04 4.9945E-044.9945E-04 -2.3478E-04-2.3478E-04 3.2152E-053.2152E-05 -3.2721E-05-3.2721E-05 5.6332E-065.6332E-06 S4S4 -7.8911E-02-7.8911E-02 8.2250E-038.2250E-03 2.9685E-042.9685E-04 5.8567E-045.8567E-04 1.1930E-041.1930E-04 9.6362E-059.6362E-05 9.1951E-069.1951E-06 7.7869E-067.7869E-06 -1.9408E-06-1.9408E-06 S5S5 -3.0590E-02-3.0590E-02 6.1653E-036.1653E-03 -2.9075E-04-2.9075E-04 2.0652E-042.0652E-04 -8.6653E-05-8.6653E-05 6.5263E-056.5263E-05 2.7378E-052.7378E-05 1.6849E-051.6849E-05 2.7796E-062.7796E-06 S6S6 9.7456E-039.7456E-03 1.4846E-021.4846E-02 2.5004E-032.5004E-03 5.6225E-045.6225E-04 -5.9750E-05-5.9750E-05 -5.3786E-05-5.3786E-05 -2.1767E-05-2.1767E-05 -4.9430E-06-4.9430E-06 -1.1240E-07-1.1240E-07 S7S7 -1.9786E-01-1.9786E-01 -4.6196E-03-4.6196E-03 4.7424E-034.7424E-03 3.1077E-033.1077E-03 1.3392E-031.3392E-03 4.8761E-044.8761E-04 1.5022E-041.5022E-04 3.9888E-053.9888E-05 7.8870E-067.8870E-06 S8S8 -5.2839E-01-5.2839E-01 7.8586E-037.8586E-03 1.7405E-031.7405E-03 3.1162E-033.1162E-03 6.1170E-046.1170E-04 3.0547E-043.0547E-04 3.2257E-053.2257E-05 9.8307E-069.8307E-06 -2.6979E-06-2.6979E-06 S9S9 -1.1631E+00-1.1631E+00 5.7578E-025.7578E-02 -1.2279E-02-1.2279E-02 3.0004E-033.0004E-03 -3.3674E-03-3.3674E-03 -3.9169E-04-3.9169E-04 5.2427E-055.2427E-05 -4.3436E-05-4.3436E-05 9.0167E-069.0167E-06 S10S10 -1.5357E+00-1.5357E+00 1.7530E-011.7530E-01 -2.0093E-02-2.0093E-02 3.4753E-033.4753E-03 -5.0779E-03-5.0779E-03 6.8772E-056.8772E-05 1.3390E-041.3390E-04 -9.4737E-05-9.4737E-05 1.3942E-041.3942E-04 S11S11 -1.1297E+00-1.1297E+00 2.4061E-022.4061E-02 3.2499E-023.2499E-02 4.4550E-034.4550E-03 6.1123E-036.1123E-03 4.3843E-044.3843E-04 -5.3598E-04-5.3598E-04 -5.0965E-04-5.0965E-04 -6.0016E-05-6.0016E-05 S12S12 1.4967E-011.4967E-01 6.5817E-026.5817E-02 2.8921E-022.8921E-02 -3.0324E-02-3.0324E-02 1.0517E-021.0517E-02 2.0410E-032.0410E-03 -9.3017E-04-9.3017E-04 -1.3418E-04-1.3418E-04 1.8464E-041.8464E-04 S13S13 3.5141E+003.5141E+00 -5.4997E-03-5.4997E-03 -1.9331E-01-1.9331E-01 7.2025E-027.2025E-02 4.3533E-034.3533E-03 -2.8977E-02-2.8977E-02 2.0959E-022.0959E-02 -8.6630E-03-8.6630E-03 1.7320E-031.7320E-03 S14S14 -3.1755E+00-3.1755E+00 4.4835E-014.4835E-01 -1.5699E-01-1.5699E-01 -4.2796E-04-4.2796E-04 -2.5786E-02-2.5786E-02 -9.8740E-03-9.8740E-03 2.8764E-032.8764E-03 -4.3038E-03-4.3038E-03 1.7383E-031.7383E-03

表12Table 12

图12A示出了实施例6的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图12B示出了实施例6的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图12C示出了实施例6的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图12D示出了实施例6的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图12A至图12D可知,实施例6所给出的光学成像系统能够实现良好的成像品质。FIG. 12A shows the on-axis chromatic aberration curve of the optical imaging system of Example 6, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 12B shows astigmatism curves of the optical imaging system of Example 6, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 12C shows the distortion curve of the optical imaging system of Example 6, which represents the distortion magnitude values corresponding to different image heights. FIG. 12D shows the magnification chromatic aberration curve of the optical imaging system of Example 6, which represents the deviation of different image heights on the imaging plane after light passes through the system. According to FIGS. 12A to 12D , it can be seen that the optical imaging system provided in Embodiment 6 can achieve good imaging quality.

实施例7Example 7

以下参照图13至图14D描述了根据本申请实施例7的光学成像系统。图13示出了根据本申请实施例7的光学成像系统的结构示意图。The optical imaging system according to Embodiment 7 of the present application is described below with reference to FIGS. 13 to 14D . FIG. 13 shows a schematic structural diagram of an optical imaging system according to Embodiment 7 of the present application.

如图13所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 13 , the optical imaging system includes sequentially from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凸面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有正光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凸面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is convex. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has positive refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is convex, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例7中,光学成像系统的总有效焦距f的值是7.38mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是8.97mm,成像面S17上有效像素区域对角线长的一半ImgH的值是6.40mm,以及最大视场角的一半Semi-FOV的值是40.45°,光学成像系统的光圈数Fno的值是1.92。In Example 7, the value of the total effective focal length f of the optical imaging system is 7.38 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 8.97 mm, and the effective pixel area on the imaging surface S17 is 8.97 mm. The value of ImgH, one half of the diagonal length, is 6.40 mm, and the value of Semi-FOV, one half of the maximum angle of view, is 40.45°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表13示出了实施例7的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表14示出了可用于实施例7中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 13 shows the basic parameter table of the optical imaging system of Example 7, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Table 14 shows the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 7, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000151
Figure BDA0002232694980000151

表13Table 13

Figure BDA0002232694980000152
Figure BDA0002232694980000152

Figure BDA0002232694980000161
Figure BDA0002232694980000161

表14Table 14

图14A示出了实施例7的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图14B示出了实施例7的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图14C示出了实施例7的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图14D示出了实施例7的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图14A至图14D可知,实施例7所给出的光学成像系统能够实现良好的成像品质。FIG. 14A shows the on-axis chromatic aberration curve of the optical imaging system of Example 7, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 14B shows astigmatism curves of the optical imaging system of Example 7, which represent the meridional curvature of the image plane and the sagittal image plane curvature. FIG. 14C shows the distortion curve of the optical imaging system of Example 7, which represents the distortion magnitude values corresponding to different image heights. FIG. 14D shows the magnification chromatic aberration curve of the optical imaging system of Example 7, which represents the deviation of different image heights on the imaging plane after light passes through the system. According to FIGS. 14A to 14D , it can be seen that the optical imaging system provided in Embodiment 7 can achieve good imaging quality.

实施例8Example 8

以下参照图15至图16D描述了根据本申请实施例8的光学成像系统。图15示出了根据本申请实施例8的光学成像系统的结构示意图。The optical imaging system according to Embodiment 8 of the present application is described below with reference to FIGS. 15 to 16D . FIG. 15 shows a schematic structural diagram of an optical imaging system according to Embodiment 8 of the present application.

如图15所示,光学成像系统沿光轴由物侧至像侧依序包括:光阑STO、第一透镜E1、第二透镜E2、第三透镜E3、第四透镜E4、第五透镜E5、第六透镜E6、第七透镜E7和滤光片E8。As shown in FIG. 15 , the optical imaging system sequentially includes from the object side to the image side along the optical axis: diaphragm STO, first lens E1, second lens E2, third lens E3, fourth lens E4, fifth lens E5 , the sixth lens E6, the seventh lens E7 and the filter E8.

第一透镜E1具有正光焦度,其物侧面S1为凸面,像侧面S2为凸面。第二透镜E2具有负光焦度,其物侧面S3为凸面,像侧面S4为凹面。第三透镜E3具有正光焦度,其物侧面S5为凸面,像侧面S6为凹面。第四透镜E4具有正光焦度,其物侧面S7为凹面,像侧面S8为凸面。第五透镜E5具有正光焦度,其物侧面S9为凸面,像侧面S10为凹面。第六透镜E6具有正光焦度,其物侧面S11为凹面,像侧面S12为凸面。第七透镜E7具有负光焦度,其物侧面S13为凹面,像侧面S14为凹面。滤光片E8具有物侧面S15和像侧面S16。光学成像系统具有成像面S17,来自物体的光依序穿过各表面S1至S16并最终成像在成像面S17上。The first lens E1 has positive refractive power, the object side S1 is convex, and the image side S2 is convex. The second lens E2 has negative refractive power, the object side S3 is convex, and the image side S4 is concave. The third lens E3 has positive refractive power, the object side S5 is convex, and the image side S6 is concave. The fourth lens E4 has positive refractive power, the object side S7 is concave, and the image side S8 is convex. The fifth lens E5 has positive refractive power, the object side S9 is convex, and the image side S10 is concave. The sixth lens E6 has positive refractive power, the object side S11 is concave, and the image side S12 is convex. The seventh lens E7 has negative refractive power, the object side S13 is concave, and the image side S14 is concave. The filter E8 has an object side S15 and an image side S16. The optical imaging system has an imaging surface S17 on which light from the object sequentially passes through each of the surfaces S1 to S16 and is finally imaged.

在实施例8中,光学成像系统的总有效焦距f的值是7.69mm,第一透镜E1的物侧面S1至成像面S17的轴上距离TTL的值是9.33mm,成像面S17上有效像素区域对角线长的一半ImgH的值是6.60mm,以及最大视场角的一半Semi-FOV的值是39.95°,光学成像系统的光圈数Fno的值是1.92。In Example 8, the value of the total effective focal length f of the optical imaging system is 7.69 mm, the value of the axial distance TTL from the object side S1 of the first lens E1 to the imaging surface S17 is 9.33 mm, and the effective pixel area on the imaging surface S17 is 9.33 mm. The value of ImgH, one half of the diagonal length, is 6.60 mm, and the value of Semi-FOV, one half of the maximum field of view, is 39.95°, and the value of the aperture number Fno of the optical imaging system is 1.92.

表15示出了实施例8的光学成像系统的基本参数表,其中,曲率半径、厚度/距离和焦距的单位均为毫米(mm)。表16示出了可用于实施例8中各非球面镜面的高次项系数,其中,各非球面面型可由上述实施例1中给出的公式(1)限定。Table 15 shows the basic parameter table of the optical imaging system of Example 8, wherein the units of curvature radius, thickness/distance, and focal length are all millimeters (mm). Table 16 shows the coefficients of higher-order terms that can be used for each aspherical mirror surface in Example 8, where each aspherical surface type can be defined by the formula (1) given in Example 1 above.

Figure BDA0002232694980000171
Figure BDA0002232694980000171

表15Table 15

面号face number A4A4 A6A6 A8A8 A10A10 A12A12 A14A14 A16A16 A18A18 A20A20 S1S1 -8.2289E-03-8.2289E-03 -8.1708E-03-8.1708E-03 -3.2227E-03-3.2227E-03 -1.0182E-03-1.0182E-03 -2.9199E-04-2.9199E-04 -7.9131E-05-7.9131E-05 -2.6568E-05-2.6568E-05 -8.9944E-06-8.9944E-06 -3.2141E-06-3.2141E-06 S2S2 1.9283E-021.9283E-02 -2.2706E-02-2.2706E-02 2.7285E-032.7285E-03 -3.5038E-03-3.5038E-03 5.6927E-045.6927E-04 -7.8304E-04-7.8304E-04 1.4468E-041.4468E-04 -5.2831E-05-5.2831E-05 4.2018E-054.2018E-05 S3S3 -4.3738E-02-4.3738E-02 1.0790E-021.0790E-02 5.2914E-035.2914E-03 -1.7391E-03-1.7391E-03 3.9018E-043.9018E-04 -7.0082E-04-7.0082E-04 -4.1376E-06-4.1376E-06 -5.8526E-05-5.8526E-05 1.0483E-051.0483E-05 S4S4 -9.9791E-02-9.9791E-02 1.4630E-021.4630E-02 1.6280E-031.6280E-03 1.7135E-031.7135E-03 5.4389E-045.4389E-04 2.9293E-042.9293E-04 2.7431E-052.7431E-05 1.6327E-051.6327E-05 -6.5980E-06-6.5980E-06 S5S5 -3.4296E-02-3.4296E-02 7.9490E-037.9490E-03 -8.3070E-04-8.3070E-04 2.5253E-052.5253E-05 -1.6904E-04-1.6904E-04 1.3030E-041.3030E-04 4.9694E-054.9694E-05 2.3989E-052.3989E-05 2.9489E-062.9489E-06 S6S6 2.6354E-022.6354E-02 2.3832E-022.3832E-02 3.2250E-033.2250E-03 5.8384E-055.8384E-05 -5.5173E-04-5.5173E-04 -2.1601E-04-2.1601E-04 -6.6065E-05-6.6065E-05 -1.6664E-05-1.6664E-05 -4.3572E-06-4.3572E-06 S7S7 -2.2687E-01-2.2687E-01 -2.0769E-03-2.0769E-03 6.5009E-036.5009E-03 4.3512E-034.3512E-03 1.7824E-031.7824E-03 6.7007E-046.7007E-04 1.9624E-041.9624E-04 5.3065E-055.3065E-05 1.0873E-051.0873E-05 S8S8 -6.3127E-01-6.3127E-01 1.4784E-021.4784E-02 -2.4952E-03-2.4952E-03 3.5804E-033.5804E-03 -9.1818E-05-9.1818E-05 2.0140E-042.0140E-04 -1.4243E-04-1.4243E-04 -2.8992E-05-2.8992E-05 -2.8379E-05-2.8379E-05 S9S9 -1.4569E+00-1.4569E+00 8.3607E-028.3607E-02 -2.4587E-02-2.4587E-02 -2.0040E-03-2.0040E-03 -5.4511E-03-5.4511E-03 -5.6731E-04-5.6731E-04 -1.3653E-04-1.3653E-04 -1.0560E-04-1.0560E-04 -9.9834E-05-9.9834E-05 S10S10 -1.6802E+00-1.6802E+00 1.7390E-011.7390E-01 -1.6530E-02-1.6530E-02 -7.1271E-03-7.1271E-03 -6.6688E-03-6.6688E-03 -4.7278E-04-4.7278E-04 1.7760E-041.7760E-04 -3.5973E-04-3.5973E-04 -8.5924E-05-8.5924E-05 S11S11 -1.0050E+00-1.0050E+00 -1.3852E-02-1.3852E-02 5.0250E-025.0250E-02 7.2385E-047.2385E-04 2.1285E-032.1285E-03 -1.9985E-04-1.9985E-04 -4.3985E-05-4.3985E-05 -8.3233E-05-8.3233E-05 -1.3774E-06-1.3774E-06 S12S12 2.8569E-012.8569E-01 6.4051E-026.4051E-02 3.0653E-023.0653E-02 -3.2517E-02-3.2517E-02 1.7083E-021.7083E-02 2.7090E-032.7090E-03 -6.5022E-04-6.5022E-04 2.4493E-042.4493E-04 3.3190E-043.3190E-04 S13S13 4.4767E+004.4767E+00 -9.0341E-02-9.0341E-02 -2.3807E-01-2.3807E-01 1.0538E-011.0538E-01 -1.3622E-02-1.3622E-02 -2.8602E-02-2.8602E-02 2.6640E-022.6640E-02 -1.4651E-02-1.4651E-02 4.3918E-034.3918E-03 S14S14 -3.7783E+00-3.7783E+00 5.4055E-015.4055E-01 -1.8743E-01-1.8743E-01 -3.7572E-02-3.7572E-02 -4.9450E-02-4.9450E-02 -6.1113E-03-6.1113E-03 4.0823E-034.0823E-03 -4.0054E-03-4.0054E-03 2.1630E-032.1630E-03

表16Table 16

图16A示出了实施例8的光学成像系统的轴上色差曲线,其表示不同波长的光线经由系统后的汇聚焦点偏离。图16B示出了实施例8的光学成像系统的象散曲线,其表示子午像面弯曲和弧矢像面弯曲。图16C示出了实施例8的光学成像系统的畸变曲线,其表示不同像高对应的畸变大小值。图16D示出了实施例8的光学成像系统的倍率色差曲线,其表示光线经由系统后在成像面上的不同的像高的偏差。根据图16A至图16D可知,实施例8所给出的光学成像系统能够实现良好的成像品质。FIG. 16A shows the on-axis chromatic aberration curve of the optical imaging system of Example 8, which represents the deviation of the converging focus of light of different wavelengths after passing through the system. 16B shows astigmatism curves of the optical imaging system of Example 8, which represent the meridional curvature of the field and the sagittal curvature of the field. FIG. 16C shows the distortion curve of the optical imaging system of Example 8, which represents the distortion magnitude values corresponding to different image heights. FIG. 16D shows the magnification chromatic aberration curve of the optical imaging system of Example 8, which represents the deviation of different image heights on the imaging plane after light passes through the system. According to FIGS. 16A to 16D , it can be seen that the optical imaging system provided in Embodiment 8 can achieve good imaging quality.

综上,实施例1至实施例8分别满足表17中所示的关系。In conclusion, Examples 1 to 8 satisfy the relationships shown in Table 17, respectively.

Figure BDA0002232694980000172
Figure BDA0002232694980000172

Figure BDA0002232694980000181
Figure BDA0002232694980000181

表17Table 17

本申请还提供一种成像装置,其设置有电子感光元件以成像,其电子感光元件可以是感光耦合元件(Charge Coupled Device,CCD)或互补性氧化金属半导体元件(Complementary Metal Oxide Semiconductor,CMOS)。成像装置可以是诸如数码相机的独立成像设备,也可以是集成在诸如手机等移动电子设备上的成像模块。该成像装置装配有以上描述的光学成像系统。The present application also provides an imaging device, which is provided with an electronic photosensitive element for imaging, and the electronic photosensitive element may be a charge coupled device (CCD) or a complementary metal oxide semiconductor (CMOS). The imaging device may be an independent imaging device such as a digital camera, or an imaging module integrated on a mobile electronic device such as a mobile phone. The imaging device is equipped with the optical imaging system described above.

以上描述仅为本申请的较佳实施例以及对所运用技术原理的说明。本领域技术人员应当理解,本申请中所涉及的保护范围,并不限于上述技术特征的特定组合而成的技术方案,同时也应涵盖在不脱离本申请构思的情况下,由上述技术特征或其等同特征进行任意组合而形成的其它技术方案。例如上述特征与本申请中公开的(但不限于)具有类似功能的技术特征进行互相替换而形成的技术方案。The above description is only a preferred embodiment of the present application and an illustration of the applied technical principles. Those skilled in the art should understand that the protection scope involved in this application is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, and should also cover, without departing from the concept of the present application, the above-mentioned technical features or Other technical solutions formed by any combination of its equivalent features. For example, a technical solution is formed by replacing the above-mentioned features with the technical features disclosed in this application (but not limited to) with similar functions.

Claims (10)

1.光学成像系统,其特征在于,沿光轴由物侧至像侧依序包括:具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,其中,所述第一透镜、所述第三透镜及所述第四透镜都具有正光焦度;1. An optical imaging system, characterized in that it comprises sequentially from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens having optical power a lens and a seventh lens, wherein the first lens, the third lens and the fourth lens all have positive refractive power; 所述光学成像系统的成像面上对角线长度的一半ImgH满足ImgH>5mm;Half of the diagonal length of the imaging plane of the optical imaging system, ImgH, satisfies ImgH>5mm; 所述光学成像系统的总有效焦距f与所述第三透镜的有效焦距f3满足2.0<f3/f<3.0。The total effective focal length f of the optical imaging system and the effective focal length f3 of the third lens satisfy 2.0<f3/f<3.0. 2.根据权利要求1所述的光学成像系统,其特征在于,所述第二透镜的有效焦距f2与所述第七透镜的有效焦距f7满足1.5<f2/f7<2.0。2 . The optical imaging system according to claim 1 , wherein the effective focal length f2 of the second lens and the effective focal length f7 of the seventh lens satisfy 1.5<f2/f7<2.0. 3 . 3.根据权利要求1所述的光学成像系统,其特征在于,所述第一透镜的有效焦距f1与所述第六透镜的有效焦距f6满足1.1<f6/f1<2.0。3 . The optical imaging system according to claim 1 , wherein the effective focal length f1 of the first lens and the effective focal length f6 of the sixth lens satisfy 1.1<f6/f1<2.0. 4 . 4.根据权利要求1所述的光学成像系统,其特征在于,所述第二透镜的物侧面的曲率半径R3与所述第二透镜的像侧面的曲率半径R4满足2.5<R3/R4<4.0。4. The optical imaging system according to claim 1, wherein the curvature radius R3 of the object side surface of the second lens and the curvature radius R4 of the image side surface of the second lens satisfy 2.5<R3/R4<4.0 . 5.根据权利要求1所述的光学成像系统,其特征在于,所述第三透镜的物侧面的曲率半径R5与所述第三透镜的像侧面的曲率半径R6满足1.4<R6/R5<2.0。5. The optical imaging system according to claim 1, wherein the curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy 1.4<R6/R5<2.0 . 6.根据权利要求1所述的光学成像系统,其特征在于,所述第四透镜的物侧面的曲率半径R7与所述第四透镜的像侧面的曲率半径R8满足1.0<R7/R8<2.0。6. The optical imaging system according to claim 1, wherein the curvature radius R7 of the object side surface of the fourth lens and the curvature radius R8 of the image side surface of the fourth lens satisfy 1.0<R7/R8<2.0 . 7.根据权利要求1所述的光学成像系统,其特征在于,所述第六透镜的像侧面的曲率半径R12与所述第七透镜的物侧面的曲率半径R13满足1.2<R12/R13<3.1。7 . The optical imaging system according to claim 1 , wherein the curvature radius R12 of the image side surface of the sixth lens and the curvature radius R13 of the object side surface of the seventh lens satisfy 1.2<R12/R13<3.1. 8 . . 8.根据权利要求1所述的光学成像系统,其特征在于,所述第一透镜的物侧面的曲率半径R1、所述第五透镜的物侧面的曲率半径R9以及所述第五透镜的像侧面的曲率半径R10满足1.5<(R1+R9)/R10<2.5。8 . The optical imaging system according to claim 1 , wherein the curvature radius R1 of the object side surface of the first lens, the curvature radius R9 of the object side surface of the fifth lens, and the image of the fifth lens The curvature radius R10 of the side surface satisfies 1.5<(R1+R9)/R10<2.5. 9.根据权利要求1至8中任一项所述的光学成像系统,其特征在于,所述第二透镜的折射率n2满足n2>1.6,所述第三透镜的折射率n3满足n3>1.6,所述第五透镜的折射率n5满足n5>1.6。9. The optical imaging system according to any one of claims 1 to 8, wherein the refractive index n2 of the second lens satisfies n2>1.6, and the refractive index n3 of the third lens satisfies n3>1.6 , the refractive index n5 of the fifth lens satisfies n5>1.6. 10.光学成像系统,其特征在于,沿光轴由物侧至像侧依序包括:具有光焦度的第一透镜、第二透镜、第三透镜、第四透镜、第五透镜、第六透镜和第七透镜,其中,所述第一透镜、所述第三透镜及所述第四透镜都具有正光焦度;10. An optical imaging system, characterized in that it comprises sequentially from the object side to the image side along the optical axis: a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens having optical power a lens and a seventh lens, wherein the first lens, the third lens and the fourth lens all have positive refractive power; 所述光学成像系统的成像面上对角线长度的一半ImgH满足ImgH>5mm;Half of the diagonal length of the imaging plane of the optical imaging system, ImgH, satisfies ImgH>5mm; 所述第三透镜的物侧面的曲率半径R5与所述第三透镜的像侧面的曲率半径R6满足1.4<R6/R5<2.0。The curvature radius R5 of the object side surface of the third lens and the curvature radius R6 of the image side surface of the third lens satisfy 1.4<R6/R5<2.0.
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